KR101339559B1

KR101339559B1 - Video Telephony System

Info

Publication number: KR101339559B1
Application number: KR1020070038431A
Authority: KR
Inventors: 서재용
Original assignee: 주식회사 엘지유플러스
Priority date: 2007-04-19
Filing date: 2007-04-19
Publication date: 2013-12-10
Also published as: KR20080094256A

Abstract

The present invention provides a video communication application for video communication with a video mobile communication terminal to a computer terminal of a registered non-video communication terminal user, and the computer and image of the non-video communication terminal user to which the downloaded installed video communication application is logged. A video communication server providing video communication between mobile communication terminals; It is provided by the user of the non-video communication terminal, the webcam is connected, and after the installation of the video communication application provided by the video communication server, the user logs in and receives a call from the video mobile communication terminal to the non-video communication terminal. A computer terminal for performing video communication; As the video call request signal is received from the video mobile communication terminal, the receiver checks whether the called party is a video mobile communication terminal, and if the called party is a non-video communication terminal, inquires whether the video communication server is a subscriber or logged in. A mobile communication switch for requesting a video call to the following video / audio processing apparatus when it is inquired that the user is logged in as a video communication subscriber from the video communication server; As the incoming call is received, the video communication path of the called party is established through the video communication server, and the video call path of the called party is established with the computer terminal of the user. After establishing the called party's voice call path and establishing the calling video call path through the mobile communication switch, the video call signal from the calling video mobile communication terminal is separated into the video signal and the audio signal. A voice signal transmitted to the established called party's voice call, and the video signal separated from the video signal to the established called party's video call, and a corresponding non-video communication terminal received through the called party's voice call path. Voice signal from the receiver and the receiver non-video communication terminal received through the established receiver video call path. A video signal from a webcam connected to a computer terminal of a computer, converted into a video call signal, and then transmitted to the calling video mobile communication terminal through the established calling video call path. Provided is a video telephone system including a processing device.

Description

Video Telephony System

1 schematically shows a video telephone system according to a preferred embodiment of the present invention;

2 is a block diagram of a video / audio processing apparatus employed in a video telephone system according to the present invention;

3 to 5 are diagrams illustrating a video telephone processing procedure in the video telephone system according to the present invention.

Description of the Related Art

10A, 10B: image mobile communication terminal 12: mobile communication terminal

14: regular telephone 16: computer

18: webcam 20: base station

22: mobile communication switch 24: mobile communication network

26: home position register (HLR) 28: video / audio processing device

28_1: video phone interface module 28_2: voice / video separation module

28_3: voice processing module 28_4: voice interface module

28_5: Audio / Video Mixing Module 28_6: Image Processing Module

28_7: video interface module 28_7: control module

30,32: Gateway 34: Public telephone network (PSTN)

36: Internet 38: Video Communication Server

The present invention relates to a video telephone system, and more particularly, when a video call is requested using a video mobile communication terminal such as a video mobile phone, even when the called party is not a video mobile communication terminal, the video telephone can make a call with the other party. It is about the system.

Recently, a video mobile phone has been released as a video mobile communication terminal equipped with a camera and capable of transmitting its own video and audio to a counterpart. In such a video mobile phone service, both the calling party and the called party need to have a terminal capable of making a video call, and when the calling party requests a video call from the calling party's video mobile communication terminal, the called party is a terminal that cannot make a video call (that is, video moving). In the case of a non-communication terminal), the video call request is terminated with the message that the video call is impossible at the mobile communication network for the video call request from the calling party.

Accordingly, the present invention has been made to solve the above-mentioned problems in the prior art, and when a video call is requested from a calling video mobile communication terminal, a video telephone system for enabling a video call or a voice call even if the called party is not a video mobile communication terminal. The purpose is to provide.

In accordance with an aspect of the present invention, a video telephony system provides a video communication application for video communication with a video mobile communication terminal to a computer terminal of a registered non-image communication terminal user and provides the downloaded video communication. A video communication server providing video communication between a computer of a non-video call terminal user to which an application is logged in and a video mobile communication terminal; It is provided by the user of the non-video communication terminal, the webcam is connected, and after the installation of the video communication application provided by the video communication server, the user logs in and receives a call from the video mobile communication terminal to the non-video communication terminal. A computer terminal for performing video communication; As the video call request signal is received from the video mobile communication terminal, the receiver checks whether the called party is a video mobile communication terminal, and if the called party is a non-video communication terminal, inquires whether the video communication server is a subscriber or logged in. A mobile communication switch for requesting a video call to the following video / audio processing apparatus when it is inquired that the user is logged in as a video communication subscriber from the video communication server; As the incoming call is received, the video communication path of the called party is established through the video communication server, and the video call path of the called party is established with the computer terminal of the user. After establishing the called party's voice call path and establishing the calling video call path through the mobile communication switch, the video call signal from the calling video mobile communication terminal is separated into the video signal and the audio signal. A corresponding non-video communication terminal for transmitting a voice signal to the established called party voice call and transmitting the separated video signal to the established called party video call, and received through the called party voice call path Voice signal from the receiver and the receiver non-video communication terminal received through the established receiver video call path. A video signal from a webcam connected to a computer terminal of a computer, converted into a video call signal, and then transmitted to the calling video mobile communication terminal through the established calling video call path. It is configured to include a processing device.

Hereinafter, a video telephone system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically showing a video telephone system according to a preferred embodiment of the present invention.

As shown in the figure, the video telephone system includes video mobile communication terminals 10A, 10B, existing network systems 20, 22, 26, 24, 30, 32, 34, 36, and video / audio processing devices ( 28), a video communication server 38, a general mobile communication terminal 12, a general telephone 14, a computer 16 and a webcam 18.

The image mobile communication terminals 10A and 10B include a camera and transmit a video / audio encoding signal encoding an image captured by the camera and a voice input from a microphone to the counterpart, and the video / audio encoding transmitted from the counterpart. After decoding a signal into a video signal and an audio signal, the video signal is displayed on a display and the audio signal is output to a speaker. Therefore, subscribers using the video mobile communication terminal can talk with each other face to face.

The existing network system (20, 22, 26, 24, 30, 32, 34, 36) refers to the existing network system that is not newly established by the present invention, the conventional base station 20, mobile communication switch 22, a home location register 26 for managing subscriber information such as mobile communication network 24, subscriber profile, public telephone network (PSTN) 34, Internet 36, mobile communication network 24 and public telephone network ( A gateway 30 for converting data between the networks 34 and a gateway 32 for converting data between the mobile communication network 24 and the Internet 36. Since these components are well known, a detailed description thereof will be omitted, and only different points will be described below.

The general mobile communication terminal 12 is a mobile communication terminal that performs a normal voice call, and is referred to as a general mobile communication terminal to distinguish it from the video mobile communication terminal. A general mobile communication terminal which is called a terminal and does not support a video call will be referred to as a mobile communication terminal.

The telephone 14 is a conventional telephone for making a voice call via a public telephone network (PSTN), the computer 16 is a conventional computer capable of accessing the Internet, and the webcam 18 is a conventional webcam connected to the computer. to be.

The computer 16 accesses a video communication server 38 to be described later by a user, and downloads and installs an application for video communication provided by the video communication server 38, and the application for video communication dedicated by the user. Is executed and the login procedure is performed by the user, the video communication window for video communication is displayed on the monitor of the computer 16, the image transmitted from the other party in the video communication is displayed in the video communication window, and the web cap The video captured from 18 is transmitted to the counterpart by the application.

The video communication server 38 is provided to enable a video call with a subscriber of the video mobile communication terminal, for example, for a user who does not have the video mobile communication terminal. As the user accesses a webpage provided by the video communication server 38 using his computer and registers and requests a download of an application dedicated to video communication provided by the video communication server 38, the video communication server 38 downloads an application dedicated to video communication to the user's computer. Here, the user information at the time of membership registration includes called terminal information (for example, mobile communication terminal number, general telephone number, etc.). The member information is managed in a database by the video communication server 38. In addition, after the user installs an application dedicated for video communication downloaded to his computer, the image communication server 38 manages the user's login status as the application dedicated to video communication is executed and logged in by the user.

The video communication server 38 uses the information of the called terminal from the mobile communication exchange 22 to request whether the called subscriber is a video communication subscriber, and retrieves the information of the called terminal from the database. It transmits to the mobile communication switch 22 as an inquiry response whether the terminal is a video communication subscriber. In addition, the video communication server 38 determines whether the called party subscriber is logged in using the information of the called party terminal when the called terminal is the video communication subscriber according to the video communication subscriber inquiry response. In response to the inquiry request, it is checked whether the video communication subscriber corresponding to the called terminal is logged in and whether the video communication subscriber is logged in is transmitted to the mobile communication switch 22 as an inquiry response.

The video / audio processing apparatus 28 is registered with the user of the calling image mobile communication terminal 10A or 10B and the video communication server 38 and is driven by logging in by running the video communication application of the computer 16. It is used when the user of the called party's non-picture communication terminal (i.e., the mobile communication terminal 12 or the general telephone 14) performs video communication. The video / audio processing device 28 decodes the video / audio encoding signal from the calling image mobile communication terminal 10A or 10B to separate the video signal and the audio signal, and the separated audio signal is received through the existing network. It is transmitted to the terminal (i.e., the mobile communication terminal 12 or the general telephone 14), and the video signal is transmitted to the computer 16 of the called user through the Internet. In addition, the video / audio processing apparatus 28 encodes the audio signal and the video signal from the called party to be transmitted to the calling party image mobile communication terminal 10A or 10B.

2 is a block diagram of a video / audio processing apparatus employed in a system according to the present invention.

As shown in the figure, the video / audio processing apparatus 28 includes a video telephone interface module 28_1, a voice / video separation module 28_2, a voice processing module 28_3, a voice interface module 28_4, and a voice / And an image mixing module 28_5, an image processing module 28_6, an image interface module 28_7, and a control module 28_7.

The video phone signal from the calling video mobile communication terminal is inputted to the video phone interface module 28_1 and is divided by the calling party according to the control of the control module 28_7 and transmitted to the audio / video separation module 28_2. In this case, since a video telephone signal is continuously received from a plurality of caller image mobile communication terminals, it is preferable to divide the caller by the caller and transmit the video call signal to the voice / video separation module 28_2.

After the video telephone signal transmitted to the audio / video separation module 28_2 is decoded under the control of the control module 28_7 and separated into the video signal and the audio signal, the video signal is transmitted to the video processing module 28_6 and the audio signal. Is transmitted to the voice processing module 28_3.

The voice signal transmitted to the voice processing module 28_3 is encoded according to the voice telephone standard according to the control of the control module 28_7 and then transmitted to the voice interface module 28_4, and the voice signal from the voice interface module 28_4. Is output after being processed to be transmitted to the called terminal side under control of the control module 28_7.

The video signal transmitted to the image processing module 28_6 is encoded according to the Internet video communication standard under the control of the control module 28_7 and then transmitted to the video interface module 28_7. The signal is output after being processed to be transmitted to the destination computer terminal 16 side under the control of the control module 28_7.

On the other hand, the voice telephone signal from the called party's non-picture terminal (for example, the mobile communication terminal 12 or the general telephone 14) is inputted to the voice interface module 28_4 and received under the control of the control module 28_7. Each side is divided and transmitted to the voice processing module 28_3. Here, since a voice telephone signal is continuously received from a plurality of destination side non-picture mobile communication terminals, it is preferable to transfer the voice telephone signal to the voice processing module 28_3 separately. The voice processing module 28_2 decodes the transmitted voice telephone signal according to the control of the control module 28_7 and transmits the decoded voice telephone signal to the voice / video mixing module 28_5.

In addition, the video signal photographed by the webcam 18 from the non-image terminal side of the called party is converted into the Internet communication system by, for example, an application dedicated to video communication installed in the computer 16, and is connected to the Internet 36. It is input to the video interface module 28_7 of the video / audio processing apparatus 28 via the video communication server 38 and the gateway 32.

The video signal input to the video interface module 28_7 is classified by the called party according to the control of the control module 28_7 and transmitted to the video processing module 28_6. Here, since a plurality of video signals are continuously received from the non-image mobile communication terminal side of the called party, it is preferable to classify by the receiver and send them to the image processing module 28_6. The image processing module 28_6 decodes the transmitted video signal according to the control of the control module 28_7 and transmits the decoded video signal to the audio / video mixing module 28_5.

The voice telephone signal and the video signal of the called party inputted to the voice / video mixing module 28_5 are encoded and mixed according to the video telephone signal standard of the video mobile communication terminal of the calling party under the control of the control module 28_7. The mixed video telephone signal is transmitted to the video telephone interface module 28_1.

The video telephone signal transmitted to the video telephone interface module 28_1 is transmitted to the video mobile communication terminal of the calling party under the control of the control module 28_7.

Next, the video telephone processing procedure in the system according to the preferred embodiment of the present invention configured as described above will be described in detail with reference to Figs.

Here, it is assumed that the calling party is an image mobile communication terminal and the called party is a non-picture terminal (for example, the mobile communication terminal 12 or the general telephone 14).

First, a user of a non-video terminal (for example, the mobile communication terminal 12 or the general telephone 14) operates on the video communication server 38 using his computer terminal 16 to which the webcam 18 is connected. After accessing the video communication website and signing up for membership (step S1), a dedicated application for video communication according to the present invention is downloaded (step S3). Then, the downloaded application is installed (step S4), and after installation of the application, the application is executed and logged in (step S5). In this way, the user of the non-video terminal (for example, the mobile communication terminal 12 or the general telephone 14) can make a video call when receiving a telephone call from the image mobile communication terminal.

On the other hand, when an image originating signal request is made by the image mobile communication terminal 10A, this image originating call request signal is received by the mobile communication exchange 22 (step S6). The mobile communication switch 22 confirms whether the called party of the video call is a video mobile communication terminal (step S7). Here, whether the called party is a video mobile communication terminal is primarily checked by the telephone number of the called terminal, and if it is the phone number of the mobile communication terminal, for example, it is requested by a home location register to confirm using the called party's subscriber profile information. Can be.

When the called party confirms to the image mobile communication terminal (for example, the image mobile communication terminal 10B) in step S7, the mobile communication switch 22 receives the image to the image mobile communication terminal 10B on the called side as in the conventional method. A call is requested (step S8). As a result, a video call path is established between the calling party video mobile communication terminal 10A and the called party video mobile communication terminal 10B according to a conventional method, and video calls are made between them (step S9).

On the other hand, if it is determined in step S7 that the called party is not an image mobile communication terminal, the mobile communication switch 22 determines whether the called party terminal number included in the video call request is the terminal number of the video communication subscriber. Request inquiry to 38) (step S10 of FIG. 4). Accordingly, the video communication server 38 checks whether the called party's terminal number requested for inquiry is the terminal number of the video communication subscriber, and transmits the confirmation result to the mobile communication switch 22 as an inquiry response (step S11).

From the received inquiry response, the mobile communication switch 22 confirms whether the called terminal of the corresponding video call request is the terminal of the video communication subscriber (step S12).

In step S12, if it is confirmed that the called party's terminal of the video call request is not the terminal of the video communication subscriber, the mobile communication switch 22 only transmits voice communication with the called party to the calling video mobile communication terminal 10A. The voice call capable guide signal that is possible is transmitted to the corresponding calling party image mobile communication terminal 10A (step S16). Here, the voice call capable guide signal may be transmitted in the form of a short message including call-back information. That is, in this case, a short message with a callback function of "Only voice call is possible with the called number, press 1 for voice call and 2 for exit" is transmitted to the calling video mobile communication terminal 10A. When the calling user presses the number key " 1 ", the voice call request is transmitted to the mobile communication switch 22, and pressing the number key " 2 " ends the calling call.

Then, when the user of the calling video mobile communication terminal 10A only wants a voice call, the voice call request signal is transmitted from the calling video mobile communication terminal 10A to the mobile communication switch 22 (step S17).

As a result, the mobile communication switch 22 requests a voice incoming call to the terminal (for example, 12 or 14) of the called party (step S18). As a result, a voice call path is established between the calling image mobile communication terminal 10A and the called terminal (e.g., 12 or 14) in a conventional manner, and a voice call is made between them (step S19).

On the other hand, when it is determined in step S12 that the called party terminal of the video call request is the terminal of the video communication subscriber, the mobile communication switch 22 sends the called terminal of the video call call request to the video communication server 38. An inquiry request is made as to whether the video communication subscriber of the user is in the login state (step S13). Accordingly, the video communication server 38 checks whether the video communication subscriber of the called party's terminal number that is requested to be inquired is currently logged in and transmits the confirmation result to the mobile communication switch 22 as an inquiry response (step S14). ). Here, the login status inquiry response signal includes subscriber information (eg, the ID of the corresponding video communication subscriber) and called terminal information (eg, a phone number).

From the received inquiry response, the mobile communication switch 22 confirms whether the video communication subscriber of the called terminal of the video origination call request is in the login state (step S15).

If it is confirmed in the step S15 that the video communication subscriber of the called terminal of the call originating request is not in the logged in state, only the voice communication is possible with the called terminal, so that the mobile communication exchange 22 performs step S16. Proceeds to and transmits to the calling image mobile communication terminal 10A a voice call capable guide signal indicating that only the voice communication with the called party is possible to the calling image mobile communication terminal 10A.

On the other hand, when it is determined in step S15 that the video communication subscriber of the called terminal of the video originating call request is in the login state, the mobile communication switch 22 receives the video communication subscriber information (eg, obtained from the login status inquiry response signal). For example, the ID of the corresponding video communication subscriber, the calling party video communication terminal information (for example, the telephone number of the video communication terminal) and the called terminal information (for example, the telephone number of the terminal) acquired from the video call request signal. The image incoming call request signal is transmitted to the video / audio processing apparatus 28 (step S20).

Accordingly, the video / audio processing apparatus 28 receives the video call request signal from the video telephone interface module 28_1 and transmits the received video call request signal to the control module 28_7, and the control module 28_7 sends the incoming call request. The video communication subscriber information (for example, the ID of the corresponding video communication subscriber) included in the video call request request signal, the calling party video communication terminal information (for example, the telephone number of the video communication terminal) and the called terminal information ( For example, the phone number of the terminal is stored in the mapping table until the call ends.

The control module 28_7 of the video / audio processing device 28 generates a video reception request signal using video communication subscriber information (for example, the ID of the corresponding video communication subscriber) included in the incoming call request, and then receives the video signal. Transmits to the video communication server 38 through the video interface module 28_7 to be transmitted to the computer terminal 16 (step S22), and the video communication server 38 requests an image reception to the corresponding destination computer terminal 16; The signal is transmitted (step S23). As a result, a procedure for establishing a video call side call path is performed between the video / audio processing apparatus 28 and the called computer terminal 16 via the video communication server 38 (step S26).

On the other hand, the control module 28_7 of the video / audio processing device 28 generates a voice incoming call request signal by using the called terminal information (for example, the phone number of the terminal) included in the incoming call request, and receives the corresponding incoming call. The mobile communication switch 22 transmits the voice call request signal to the destination terminal through the voice interface module 28_4 through the voice interface module 28_4 (step S24). . Accordingly, a procedure for establishing a voice call-side call path is performed between the video / audio processing device 28 and the called terminal 12 or 14 via the mobile communication switch 22 (step S27).

Meanwhile, at the same time as the steps S22 to S27, the video / audio processing device 28 performs a video call-side call establishment procedure with the calling video mobile communication terminal 10A via the mobile communication switch 22. (Step S28).

In the above-described video / audio processing apparatus 28, the calling side call path with the calling mobile image mobile communication terminal 10A, the called side voice call path with the called terminal 12 or 14, and the called side computer terminal 16. After all of the called video call paths are established, the video call signal from the calling video terminal 10A is separated into a video signal and an audio signal by the video / audio processing unit 28 so that the audio signal is called on the called terminal. 12 or 14 and the video signal is transmitted to the computer terminal 16. In addition, the audio signal from the called terminal 12 or 14 and the video signal from the computer terminal 16 captured by the webcam 18 are mixed in the video / audio processing apparatus and converted into a video call signal, and then the calling party is transmitted. Is transmitted to the image mobile communication terminal 10A. Accordingly, the calling party and the called party can make a video call.

On the other hand, in the above specific embodiment, only the case where the called user has a webcam connected to the computer is described. However, the called user may not have a webcam. The video from the terminal side can be viewed by a computer, and the video of the called user may not be transmitted to the calling image mobile communication terminal.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. If such changes and modifications fall within the scope of the appended claims, it is obvious that they belong to the present invention.

As described above, according to the present invention, a video call or a voice call can be made even when the called party is not a video mobile communication terminal when a video call is requested by the calling video mobile communication terminal.

Claims

Provides a video communication application for video communication with a video mobile communication terminal to a computer terminal of a registered non-video communication terminal user, and the computer and video mobile communication terminal of the user of the non-video communication terminal to which the downloaded video communication application is logged. A video communication server providing video communication therebetween;

It is provided by the user of the non-video communication terminal, the webcam is connected, and after the installation of the video communication application provided by the video communication server, the user logs in and receives a call from the video mobile communication terminal to the non-video communication terminal. A computer terminal for performing video communication;

As the video call request signal is received from the video mobile communication terminal, the receiver checks whether the called party is a video mobile communication terminal, and if the called party is a non-video communication terminal, inquires whether the video communication server is a subscriber or logged in. A mobile communication switch for requesting an incoming video call to the following video voice processing apparatus when it is inquired that the user is logged in as a video communication subscriber from the video communication server;

As the incoming call is received, the video communication path of the called party is established through the video communication server, and the video call path of the called party is established with the computer terminal of the user. After establishing the called party's voice call path and establishing the calling video call path through the mobile communication switch, the video call signal from the calling video mobile communication terminal is separated into the video signal and the audio signal. A voice signal is transmitted to the established called party's voice call and the separated video signal is transmitted to the established called party's video call; and from a called party's non-picture communication terminal received through the called party's voice call path The receiver's non-video communication terminal received through the established voice signal and the established Video signal processing by mixing video signals from a webcam connected to a computer terminal to convert the video signal into a video call signal and then transmitting the converted video call signal to the calling video mobile communication terminal through the established calling video channel. A video telephony system comprising a device.

The method of claim 1,

The mobile communication switch receives a video call request signal from a video mobile communication terminal, and if the called party is a non-video communication terminal or if it is inquired that it is not logged in as a video communication subscriber from the video communication server, And transmitting a voice call capable guide message and requesting a voice call to the called party's non-picture communication terminal when a voice call request is received from the calling party's video mobile communication terminal.

3. The method of claim 2,

And the voice call enabled guide message comprises a short message having a callback function.

The method of claim 1,

The mobile communication switch is a non-video communication terminal and the calling party information and the destination terminal information included in the video call request signal received from the video mobile communication terminal when the called party is logged in to the video communication server; The video communication subscriber information obtained when the login status is inquired from the video communication server is included in the video incoming call signal and transmitted to the video audio processing apparatus.

The video and audio processing apparatus stores and stores the calling video communication terminal information, the called terminal information and the video communication subscriber information in the form of a mapping table until the call ends, and the calling video communication terminal information and the called terminal information and the image are stored. A video telephone system characterized by designating a destination of an output signal using communication subscriber information.

In the video audio processing device constituting the video telephone system,

Receives the video phone signal from the calling video mobile communication terminal and transfers it to the voice video separation module according to the control of the control module and controls the receiving video phone signal input from the voice video mixing module. A video telephone interface module for transmitting to a video mobile communication terminal of a calling party;

After the video telephone signal received from the video telephone interface module is separated into a video signal and an audio signal under the control of the control module, the video signal is transferred to the video processing module and the audio signal is transmitted to the audio processing module. ;

After converting the voice signal transmitted from the voice image separation module according to the control of the control module according to the voice telephone standard, the voice signal is transferred to the voice interface module, and the voice telephone signal transmitted from the voice interlace module is converted under the control of the control module. A voice processing module for transmitting to a voice image mixing module later;

The voice signal input from the voice processing module is processed and output to be transmitted to the called terminal according to the control of the control module, and the voice telephone signal input from the called terminal is classified by the called party according to the control of the control module. A voice interface module for transmitting to the processing module;

After converting the video signal transmitted from the audio image separation module according to the control of the control module according to the Internet video communication standard, and transmits to the video interface module, and converts the video signal transmitted from the video interlace module under the control of the control module An image processing module for transferring to an audio image mixing module afterwards;

The video signal input from the image processing module is processed to be transmitted to the called party's computer terminal under the control of the control module and outputted, and the video signal input from the called party's computer terminal is divided by the called party under the control of the control module. An image interface module for transmitting to the image processing module;

After receiving the voice telephone signal and the video signal of the called party and mixing them according to the video telephone signal standard of the video mobile communication terminal of the calling party under the control of the control module, the mixed video telephone signal is transmitted to the video telephone interface module. Video speech processing device comprising a voice image mixing module.